TY  - BOOK
AU  - Watts, Earle F.
AU  - Rule, John T.
TI  - Descriptive Geometry 
U1  - 516.6 
PY  - 1946///
CY  - Englewood Cliffs, Nj : 
PB  - Prentice-Hall, 
KW  - Geometry Descriptive
N1  - NN
ER  -